Enrollment
1,141
California · 2024-25 NCES data
High school (grades 9-12) · San Anselmo, CA
Archie Williams High
Federal NCES profile for Archie Williams High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063879006525
👥 S:T ratio 28
📚 AP courses 75
🌟 Gifted program 30
🎓 Counselors 43
📋 Attendance 58
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Archie Williams High earns 47/100 on the Resource Investment Index, with class sizes smaller than 78% of California schools.
- #1 of 4
- public schools in San Anselmo · Resource Index
- 47
- Resource Index · Typical
- 18.1:1
- small classes for California
- 11.0%
- free-lunch eligible
Archie Williams High has class sizes smaller than 78% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Archie Williams High ranks #1 of 4 public schools in San Anselmo, CA.
School address
District: Tamalpais Union High · California
NCES ID 063879006525 Verify on NCES CCD record →
Teachers (FTE)
63.0
Federal CCD staff survey
Students per teacher
18.1:1
vs 21.5:1 California avg
-16% vs state
Free-lunch eligible
11.0%
vs 55.5% California avg
-80% vs state
Student-teacher ratio in context
How Archie Williams High compares with California and U.S. medians
What stands out at Archie Williams High
Archie Williams High is a lower-poverty, large high school in San Anselmo, California, enrolling 1,141 students.
Class sizes run a bit leaner than typical: 18.1:1 puts it in the smaller third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 11.0% free-meal eligibility runs 80% below the California average.
By headcount it is one of the larger campuses in California, bigger than 91% of state schools at 1,141 students.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 382 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #121.
Its student body is led by White (74%) and Hispanic or Latino (15%) (diversity index 42/100).
On the academic-pipeline side it reports 15 Advanced Placement courses.
Counselor coverage runs a bit thin, about 285 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
16.9% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Tamalpais Union High spends $20,137 per pupil, 22% above the California average, a better-resourced district than most.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Tamalpais Union High also operates Redwood High (1,722 students) and Tamalpais High (1,470 students) alongside Archie Williams High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Archie Williams High compares
Archie Williams High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.1:1 | ▼ 16% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 11.0% | ▼ 80% | 55.5% | 51.7% |
| Enrollment | 1,141 | top 9% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.1:1
Leaner classes than 24% of US schools, heavier class loads than most.
1,141
Bigger than 93% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
11.0%
free-lunch eligible
- 80% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
18.1:1
students per teacher
- 16% below state mean
Top 22% in California - lower ratio than 78% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
16.9%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$20,137
per pupil, district-wide
- above California avg of $16,509
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors4.0 FTE
Per 285 students, the combined health-and-guidance staffing load for this school.
Discipline context
2
in-school suspensions + 9 out-of-school
Suspension rate: 0.2 per 100 students. Combined in-school and out-of-school rate: 1.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 74.2%
Hispanic or Latino 14.9%
Two or More 7.7%
Asian 1.7%
African American 1.4%
American Indian / Alaska Native 0.1%
Largest group: White at 74.2% of enrollment.
Student-body diversity index 42.1/100
Simpson diversity index - at 42.1, Archie Williams High is less mixed than the California school average of 46.0.
Programs
AP courses offered 15
Funding & spending
District-wide per-pupil expenditure for Tamalpais Union High, which includes Archie Williams High.
$20,137
Per student
+22%
vs California
Avg $16,509
+21%
vs U.S.
Avg $16,593
Revenue mix
Local 86.3%
State 9.9%
Federal 3.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Archie Williams High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Redwood High | Larger | Similar economic need | Similar S:T ratio |
| Tamalpais High | Larger | Similar economic need | Similar S:T ratio |
| Tamiscal High (Alternative) | Smaller | Similar economic need | Lower S:T ratio |
| San Andreas High (Continuation) | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Archie Williams High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,722
- Students per teacher
- 18.9:1
- Resource Index
- 44/100
- Enrollment
- 1,470
- Students per teacher
- 19.3:1
- Resource Index
- 42/100
- Enrollment
- 124
- Students per teacher
- 12.4:1
- Resource Index
- 61/100
- Enrollment
- 46
- Students per teacher
- 9.2:1
- Resource Index
- 61/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,141 students)
Similar student-teacher ratio (~18.1:1)
Next steps
Verify locally before acting on Archie Williams High's federal record.
- Compare Archie Williams High against another school. Compare schools
- Tamalpais Union High's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Archie Williams High
How many students attend Archie Williams High?
Archie Williams High has 1,141 students enrolled. It is a high school in San Anselmo, CA.
What is the student-teacher ratio at Archie Williams High?
The student-teacher ratio at Archie Williams High is 18.1:1, which is 16% lower than the California average of 21.5:1 and 15% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Archie Williams High?
11.0% of students at Archie Williams High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Archie Williams High?
The largest demographic group at Archie Williams High is White at 74.2% of enrollment, in San Anselmo, CA.
What is the Resource Investment Index for Archie Williams High?
Archie Williams High has a Resource Investment Index of 47/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Archie Williams High rank among public schools in San Anselmo?
By Resource Investment Index, Archie Williams High ranks #1 of 4 public schools in San Anselmo, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in San Anselmo on the city page.
Is Archie Williams High a good school?
Archie Williams High earns 47/100 on the Resource Investment Index, with class sizes smaller than 78% of California schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Tamalpais Union High?
Besides Archie Williams High, Tamalpais Union High also operates Redwood High (1,722 students), Tamalpais High (1,470 students), and Tamiscal High (Alternative) (124 students). See the Tamalpais Union High district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.